var a:array[1..100] of integer;
n,i:byte;
begin
randomize;
readln(n);
writeln('Massiv');
for i:=1 to n do
begin
a[i]:=random(50);
write(a[i],' ');
end;
writeln;
wrteln('Chetnye indeksy');
for i:=1 to n do
if i mod 2=0 then write(a[i],' ');
readln
end.